I don't think it matters. My wife is an artist, and most artist (just my experience) view "true" art as non functional. It is kind of a defining feature. But yeah, I agree, it doesn't really matter. I would rather play a videogame than go to a museum... so people should just enjoy whatever it is they enjoy.
She's totally lost them. The first kind of art expression humans developed was painting, and we started because we wanted to keep register of primitive daily lifes. Some forms of art appeared from very functional needs, think of architecture.